145. " and it is not for any one to die but by allah's leave
at a term appointed;
and whoever desires the reward of this world,
we give him thereof;
and whoever desires the reward of the hereafter, we give him thereof !
and allah will reward the grateful."

commentary:
as it was said before, the vain gossip of the death of the prophet
(p.b.u.h.), in the battle of 'uh¤ud disturbed a great number of muslims so
that some of them ran away from the battlefield. it was so terrible that a
few of them even wanted to return from islam, too. in this verse, again to
warn and aware that group, it says:

" and it is not for any one to die but by allah's leave at a term
appointed; ..."

thus, if the prophet of allah (p.b.u.h.) were slain in that battlefield,
it would not be any thing but the devised performance of allah's way of
treatment.

on the other side, escaping from the battlefield cannot prevent the
coming of death of a person, the same as the participation in the holy war
does not hasten in the death of anyone.

at the end of the verse, it indicates that the effort and endeavour of
no one will be wasted. then, if the aim of a person is only the worldly
material profits (and, like those fighters of 'uh¤ud, tries only for obtaining
war spoils) the one will finally get a share of it and, however, such people
will attain their aim.

"... and whoever desire the reward of the hereafter,
we give him thereof ! ..."

therefore, now that obtaining both the worldly merits and those of
hereafter need effort, then why might a person not use the capital of his
self along the second path, which is an excellent and constant way ?
another time again, it emphasizes that:

"... and allah will reward the grateful."